Title :
A DCME frame structure
Author :
Wang Zai-Xing ; Wang De-Jung ; Bai Ming
Author_Institution :
Beijing Univ. of Posts & Telecommun., China
Abstract :
Digital circuit multiplication equipment (DCME) permits the concentration of a number of 64kbit/s PCM encoded input trunk channels on a reduced number of transmission channels. It has two basic techniques; one is digital speech interpolation (DSI), the other is adaptive differential pulse code modulation (ADPCM). Essential facilities, interface conditions and overall performance requirements are given by recommendation G.763, 1988. However, frame structure didn´t detail assignment. Many corporations such as ECI, NEC and AT and T have produced products. They have used different DCME frame structures. NEC´S NCM-501 DCME fully complies with INTELSAT IESS-501, DCME multiframe length is is longer than new DCME frame length. This new DCME frame structure is described.<>
Keywords :
channel capacity; data communication systems; digital communication systems; encoding; interpolation; line concentrators; packet switching; pulse-code modulation; telecommunication equipment; voice communication; 64 kbit/s; DCME frame structure; INTELSAT IESS-501; NCM-501 DCM; PCM encoded input trunk channels; adaptive differential pulse code modulation; digital circuit multiplication equipment; digital speech interpolation; interface conditions; multiframe length; overall performance; recommendation G.763, 1988; transmission channel; Digital circuits; Digital modulation; Integrated circuit interconnections; Modulation coding; National electric code; Phase change materials; Pulse modulation; Speech coding; Telecommunications; Telephony;
Conference_Titel :
TENCON '93. Proceedings. Computer, Communication, Control and Power Engineering.1993 IEEE Region 10 Conference on
Conference_Location :
Beijing, China
Print_ISBN :
0-7803-1233-3
DOI :
10.1109/TENCON.1993.327919
